Aluminum cone with Santoprene rubber surround. Cast aluminum frame with radial finned heat sink. Peak power: 1,800 watts.The item "Alpine SWR-T12 12-Inch 1800 Watt 4 Ohm Shallow Mount Subwoofer" is in sale since Friday, August 7, 2020. This item is in the category "Consumer Electronics\Vehicle Electronics & GPS\Car Audio\Car Subwoofers". The seller is "pacificstereo951" and is located in Riverside, California. This item can be shipped to United States.